Surfacing and polishing machine.



J. H. PRUGH.

SURFACING AND POLISHING MACHINE.

ArrLroATlox FILED nu 13.1907.

WITNESSES. VINVENTOR. faewza f' v l MUM,

PATBNTED Nov. 19, 1907.

2 SHEETS-SHEET 1.

No. 871,'143. PATENTED NOV. 19,1190?. 'J. H. PRUGH.

SURFACING AND POLISHING MACHINE, APPLIOATION FILED una. 1907.

2 SHEETS-SHEET 2.

WITNESW l lN/NTOR C. @52 wf UNITED STATES" Yiuirieivr OFFICE.

JoHN H. PRUGH,QF TOLEDO, 01110.,

'SUBFACING AND POLI'SmNGv MACHINE.

Specification of Letters Patent. 'ippiimion sied lay 13.1907. semi il.37s 307.

Patented Nov. 19', 1907.

To all whom 'it may concern:

Be it known that I, JOHN H. PBUGH, a ci'tizen of the United States, anda resident of Toledo, in the county of Lucas and State of Ohio, .haveinvented a new and useful Surfacing and Polishing Machine; and I doherey by declare the following to be a full, clear,

and exact description of the invention,V such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to Vthe accompanying drawings, and to the figures ofreference marked thereon, which form a part of this specification.

Myminvention relates to Hoor-surfacing mac es, and is particularlydesigned for e smoothing of. mosaic, stone and other like floors, but isnot restricted to such use.

The objeotofmy invention is the provision of a highly efficient machineof this class, the polishJn mediums of which have the requisite sh gmovements imparted thereto by simple and improved mechanism, and

, which have their vertical movements easily controlled by themanipulation of a suitable lever whereby they may be raised or loweredatthe will of the operator, while lat the same time they are permittedto have free vertical movements fto accommodate themselves to the-unevenness of the surface over which they are' operating. y

The operation, construction and arran e- Y described in the followinspecification and a preferred embodiment thereof illustrated in theaccompanyin drawings, in Which,-

Figure 1 is a si e elevation of the machine embodying my invention, witha portion of the frame broken away. Fig. 2 is an end elevationv thereofwith a portion of vthe frame broken away and the motor removed, and

, Figs. 3, 4 and 5 are details of apart of the mechanism controlling thevertical movements of the mediums.

Referring to the drawings, 1 designates a suitable frame which issupported by fore and aft sets of caster-wheels 2,. 2, the journalheadsof which are suitably mounted in bearing-bosses 3 carried` bythef1'ame.` A s rocket-chain 4 connects th sprocket-whee 5, 5 carried bythe journal-heads of each set and one head of a'set is projected-abovethe frame andcarries Aa steei'ing-handleQl by means of j whiclLtheturnin of the wheels is controlled.

The abradinglocks 6, 6, which, when in operation, are intended to restfreely on the 'surface to be polished, may be carborundum, sand-stone orother suitable abrading material and are vcarried by frames 7 7, whichhave their under surfaces suitably shaped to receive the blocksand areprovided with` set- 'screws v8 or othe'rsuitableblock-securing means.v'These blocks'l are-formed on; their upperv surfaces withlaterally-spaced` bearingbosses'9 between whichV are journaled the'bearing-sleeves 10, whichreceive and are adapted to havereci catorymovements on the horizontal shaft- 11. A reci rocating shufflingmovement is imparted to e blocks 6 by the vertically-disposed arms k12,which work freely through ahning 'de-Sleeves or boxes 13 and 14 and havet eir lower ends provided with saddles 15, which straddle the sleeves 10and are pivoted to the bosses 9 of the block-frames, as shown..`I Theksleeves 13 are pivotally carriedr by crank-pins or bosses 16 projectingfrom the sides of thegearwheels 17 which gears are mounted on transverseshafts 18 suitably journaled in the carriage frame 1, and the sleeves'14are pivot- .uprights 19, which rigidly rise from and overhang one sideof the carriage-frame. It will thus be seen that a rotation of theearwheels 17 will cause the lower ends o the arms 1,2 to uniformly swinbackwardand forward with the pivots of t e sleeves or boxes 14 astheir'fulcrums. The block-frames 7 are -permitted to have universalrocking 4movements to accommodate themselves to any unevenness in thevsurface over which they are operating due to their rocking in onedirection on the pivots 10 and in the `other direction by reason of saidpivots having slight vertical pl'ay in the bearings ofthe saddles 15'.The shaft 11 h as'anA arm 20 projectinr ri 'dly at right angles fromeach end thereo W 'ch arms combine with the shaft 11 to foi'm a Ulshapedcarrying frame for the frames 7 and have their free ends projectingfreely through elongated bearing-heads 21, which are fixed to the endsof the rock-shaft 22. -This shaft is suitably journaled beneath theframe 1 in parallelism with the shaft 11, and is rocked by anoscillation of the lever 23, which is fulcrumed to the frame and has itslower. end'connecting with the shaft 22 throughthe medium ef the'link 24and crank-ami 25, which latter is fixed to the shaft. It is thusapparent that a raising or lowering of the shaft 11 and parts carriedthereby may be eifectedby an oscillation of.

. outer fends thereof, thus formingv diagonally` opposed solidportionsand diagonally-,op-

posed out away portions which enable the arms to `have free verticaloscillatory movements relative to 4 said bearing-heads, `with the shaft22 as their axis.' When the `2'0 shaft 22 is rocked in the properdirection to raise the block-frames, the walls of the sockets opposingthe cutaway portions thereof engage the arms 20l and cause 'the sameto-be oscillated therewith.

A suitablev motor 28 is mounted on the frame 1 and is intended tocommunicate -power to the pulley 29 through the medium of the belt 30,said pulley being carried by the shaft 31, Which-is journaled insuitable 30l bearings transversely of the frame. VlMounted on theopposite end of this shaft is a spiral gear 32, which meshes with arelatively larger spiral-gear This gear is carried by the shaft 34,"which extends-longitudinally of thef'rame, being journaled lin suitablebearings in the standards 19 and also carries the small right and leftspiral-gears 35, 35 for meshing with and driving the gears 17 in reversedirections, which gears arel also -of spiral-type. The plug 36, which isvelectrically connected to the motor by the cord 37, is intended to bethreaded into an elec` tricvlamp socket or otherwise suitably connectedto asource of electrical' supply'.` A

A controller 38 regulates. the running of the motor. Carried beneath theframe 1 isa Watertank 39, having the distributing pipe V40 communicatingwith its bottom. This pipe is secured to and extends longitudinally ofthe side of the frame contiguous to the pol- `isliers and has thevalve-controlled flexible branch tubes 41 leading therefrom andcommunicating with apertures 42 through the block-frames 7, thuspermitting water to be slowly supplied to the tops of theabrading blocks6 over .the sides of which itflows to assist in t'hepolishingf t v. Theoperation of my invention is as follows z-The machine being -properlypositioned, the abrading-blocks 6, 6 are lowered and permitted to restfreely on the floor by a throwing of thelever 23 to the left, and theelectric current is cut into the motor28 by. a5 a proper manipulationofthe controll'er-leverv `are permitted to have a free rockingv move 38,thus communicating rotation through i the intermediate gearing to tliecranked gearwheels4 17. As the gears 17 revolve the l sleeves 13 carriedthereby worlr'up and down f on the arms ',12of the block-frames andcause 70 the abrading-blocks carried by said frames to have properlytimed opposedreciprocatory movements on the surface to be polished.- Theblocks 6 rest on .the floor by gravity and ment relative to the shaft 11or a free vertical.

-inovement with the shaft and arms 12, the' latter moving freely throughthe sleeves 13' l and 14, thus adaptiiilgr the blocks to .accommodatetheir positions to the surface over which they operate'. The shaft 11 isalso permitted to have a vertical movement'independent of a movementofthe bearing-heads 21 in'which its arms 2O are mounted, dueto the shaping,of said heads in the manner above described, which shapingin suohmannerdoes not impair the lifting leverage of the heads relative tothe/blocks. IVhen the machine is in operation thel valves k43,controlling the water .supply to the abradingblocks, lare opened topermit the Waterto fiow'overthe blocks to assist in the polishing. Theopposed movements of the'blocks 6,

.which is occasioned by the reverse driving of the gears 11, causesabalanced action of said blocks so that no tractiv'e 4force is sup- .Yplied-thereby to the machine.v The placing of the polishing means at theside of the ma'- chine and the extending of the sa'me beyond the outersides of the frames 7, as shown, makes it possible Ato operate close toa wall and in corners, thus doing all by machine which has heretoforebeen done by hand and" doing-the same much more rapidly and efficientlyand with greater/uniformity.. While I have not shown any means fordrivin the machine it is apparent that it may be eIther .motor or handdriven, as may be-desired,

both being common in the art.

I wish it undeisto'od YthatI do not desire 1,10 to restrict myself tothe'ract details of con-A struction and arrangement` of the parts shownand described, asiobvious, modifications will occur to a person skilledin the art` Having thus described my invention, 115 what I claim asnewand desire to secure by Letters Patent, is,- i

- 1. The combination in a surfacing-inachine, -of a plurality` ofabrading-members mounted at oneside of the machine, a member-slidinglycarrying the abrading members and adapted' to guide the movementsthereof, and mechanism for imparting v,opposed unitary movements tothemembers. t i i 2.7' The combination infa *surfacing-maf 12 chine, of aplurality ofgravity abradingmembers mounted at one side of the machine,said members being free to have rocking or vertical movements, anelementguiding the reciprocatory vmovements of the abrading Y members,and mechanism for imparting opposed simultaneous reciprocating'movements to the members.

'3. In a surfacing-machine, an abrading member, an arm vertically risingfrom and having pivotal connection with said membermeans forming afulcrum for the upper endY of said arm, a horizontal element guidinglthe movements of said members, and mechanism cooperating with the arm'to impart aswlnging movement to the arm and a reciprocating movement tothe. abradingmember. Y

4. In a surfacing-machine,I a' verticallydisposed arm 'mounted for sainging and f ree vertical movements, ,'an abrading-Inember carried atthe lower end of said arm, a guiderod* carrying the abrading-member topermit it to have slidingand universal movements relative thereto, andmechanism for imparting a swinging'movement to the arm rto effect avreciprocation of thefabradingmember.

5. In a surfacing-machine, an abrading-A member, an arm verticallyrising from said member, .fulcrum means for the upper end ofthe arm, arevoluble element slidingly embracing the arm intermediate its ends, and.mechanism for revolving said element. l

6. In l.a surfacing-machine, va gravity abrading-member, an arml risingtherefrom, fulcrum.means forv the upper end of theiarm, a revolubleelement slidingly coacting with the arm below its fulcrum, and mechanismfor revolving said element for imparting a ber.

' r 7. In a surfacing-machine, an abradingmember, a pivotal fulcrummember and a pivotal revolving member `mounted above the.abrading-membe'r, an arm pivotally rising from the abrading-member landslidingly coacting with both t efnlcrum andv revo ing members, andmechanism for revolvinfg the latterof said members to impart a shuflingV movement to the abrading-member.

8.' The combination lina snrfacing-ma-f chine, ofasetof ab 'member s, anarm pivotally from eac of said ,members .and mounted or swinging l andfree vertical movements .a guide-'rod slidingly carrying said members,and mechanism coperati with the arms toimpartsimultaneous' sh flingmovements Ito the' abrf ling-members.v

',9: In a surfacing-machin `a'set of abra`ding-members, an arm J' fromeach of said members, guidingvmeans for theabrad-v l ing members,fulcrum means for the up er fes end of each arm, a revolving element',si ingly coacting.`with each arm below its fulcrum, and mechanism forrevolving. said .elements to impartshuiling'; movements to ytheabrading-members.

10. In asurfac" -machinea set of'abrading-members `workingl in tandem,an arm pivotally rising from each of said members and mounted forswinging and free Avertical movements, and mechanism cooperating y withthe arms to impartopposed'simultaneous s'huling movements totheabradingmembers.

-1 1. In a surfacing-machine, a set of abrading-members, an armpivotally rising from each of said members `and mounted for swinging andvertical movements, a revolving element sliding-ly coacting with eacharm, and mechanism forv reversely driving said elements to impartopposed shuiiling movements to 'the abrading-members.

" 12. In a` surfacing-machine, a pair of abrading-members, a pivotalfulcrummember and a pivotal revolving member associated with eachabrading-member, an arm pivotally projectin from each abradingmember andsliding y coacting with the associated fulcum and revolving members, andmechanism-for imparting movements to the revolving members tocommunicate opposed shuflling movements to the abradingmembers.

13. In a surface machine, the combination -with the shufilingabrading-member, and the holder therefor, of a Water-supply, and aflexible tube having one end connected toY the water supply and itsother end attached to the holder whereby to follow the movement of saidmember and supply water to its top. s f

-14.In a surfacing-machine, an abradingmember, an, arm pivotally risintherefrom and mounted for swinging and vee vertical movements, mechanismcooperating with the arm to impart a shufliing movement to theadmg-member, and means for raising or lowering the abrading-member.

15. In a surfacing-machine', a verticall oscillatory frame,y anabrading-member slid ingly carried bythe frame, an arm pivotallyprojecting from the abrading-member and mounted for, swinging and freelongitudinal movements, mechanism cooperating with the arm to impart ashufiling movement to said member, ardi'neans for oscillating the frameto raise and lower the abrading-member. 16. In a'surfacing-machine, ahorizontal shaft, arms rigidlyprojecting from said shaft,

ashuffling movement to said memmovementsto said members, and means foroscillating the frame to raiseand lower said l tion with the surfacingagent, of a U'shesped frame carrying said. agenta roek-shsetft, and'20members.

18.l In a surfacing-mamme, a horizontal shaft 'arms rigidlyprojeetingfrom seid shaft,

-a rock-shaft having connection with said arms a .plurality ofabradingmembers movable on said horizontal fshar`t,` mechanism forimparting a shuffling movement to said members, and means-for rockingtherock-shaft to raise or'lower said.v horizontal shaft.

19. In a .surfacing-machine, the combination 'With-an abrading-mem-ber,of .a framey Carrying'saidmember, a rook-shaftA haing connectlon withthe frame adapted topermit va free oscillation of theframe relative tothe rock-shaft and to rook the frame when 'the y shaft isroeked.

20. In a surfacing-machine; the eom Dinabearingv-memhers carried yeaidshaft and 1' loosely receiving the arms' of the frame, seid membersleach having da onally op osd solid portionsand 4diagonalgly oppose,Cu'ty away portionsA to'permit a freeoscillatory 25 movement ofthearms'threinand also to effeet a positive oscillationl of the frameto'raise' or lowferlthe Surfaoingagent's g In .testimony whereof I halvehereunto signed myna'me to this sIpeciication in the 30 .presence-of twosubscribing Witnesses;

JOHN PRUGH l Witnesses:

' HAZELl B.H1ETT, C, W. OWEN.

